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Finding the Fourth Proportional to 408,036.48, 611,316.60 and 348,987.48

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Solution

The fourth proportional to 408,036.48, 611,316.60 and 348,987.48 is: 522,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,036.48 : 611,316.60 = 348,987.48 : x
  2. Step 2: Convert to fraction form
    408,036.48/611,316.60 = 348,987.48/x
  3. Step 3: Cross multiply
    408,036.48x = 611,316.60 × 348,987.48
  4. Step 4: Simplify right side
    408,036.48x = 213,341,839,716.17
  5. Step 5: Solve for x
    x = 213,341,839,716.17/408,036.48
  6. Step 6: Final answer
    x = 522,849.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.